Lathe.



G. A. SPINNBR. LATHE.

APPLICATION FILED JUNEE, 1911. 1,002,327. Patented Sept.5,1911.

2 SHEETS-SHEET l.

G. A. SPINNER. LATHE. v APPLIUATION FILED Jim1: a. 1911.

Patented Sept. 5, 14911.

2 SHEETS-SHEET 2.

GEORGE A. SPINNER, OF CINCINNATI, OHIO.

LATHE.

Speccation of Letters Patent.

Application filed .Tune 5, 1911.

Patented Sept. 5, 1911.

Serial No. 631,261.

To all whom 'it may concern:

Be it known that I, GEORGE A. SPINNER, a citizen of the United States,residing at Cincinnati, in the county of Hamilton and State of hio, haveinvented certain new and useful Improvements in Lathes, of which thefollowing is a specification.

My invention relates to improvements in lathes. One of its objects is toprovide improved driving mechanism both longit-udi` nal and crossfeedfor the tool carriage members.

Another object is to provide improved and simple mechanism operable att-he tool carriage to effect speed changes in the feed of the toolcarriage members.

Another object is to provide an improved arrangement and combination ofparts carried by the tool carriage to effect speed changes in the feedof the tool carriage members.

My invention further consists in certain details of form, combinationand arrangement, all of which will be more fully set forth in thedescription of the accompanying drawings, in which:

Figure 1 is a front elevation of a lathe tool carriage and apronembodying my invention. Fig. 2 is an enlarged detail partly in sectionon line a a of Fig. 3. Fig. 3 is an enlarged sectional detail on line mm of Fig. 2. Fig. 4 is an enlarged sectional detail on line e c ofFig. 1. Fig. 5 is a perspective view of the change speed guiding andlocking plate. Fig. 6 is a side elevation of the change gear sleeve andbeveled gear sleeve carried by the feed rod, detached.

Inthe accompanying drawings illustrating the preferred embodiment of myinvention, A represents the lathe bed, B the tool carriage mounted andadjustable longitudinally thereon, and C the lathe apron.

D represents the usual lead screw and F the feed rod, which may bedriven either by gears or by belt at the lathe head stock. The feed rodF is supported in bearings 2, 3 attached to the apron C, and has splinedthereto intermediate of said bearings a gear 4 which meshes with anddrives a gear 5 rigidly secured to a shaft 6 which is journaled inbearings 7 and 8 carried by the apron C. A sleeve 9 is loosely journaledupon the feed rod with one end supported in the bearing 3 and theopposite end abutting against the hub of gear 4, whereby the sleeve 9 islimited as to movement endwise. A plurality of gears 10, 11, 12, 13, 14,of different diameter are rigidly secured upon the exterior of saidsleeve, and said sleeve is provided with an internal recess 15 toreceive the end 17 ofa sleeve 18 which is loosely journaled upon thefeed rod F and provided exteriorly with two beveled gears 19, 20. Theend 17 of the sleeve 18 is provided with a key 21 which engages a keyway 22 in the recess 15 of the sleeve 9 to cause the sleeves 9 and 18 torotate together. The sleeve 18 has an annular groove 23 which is engagedby pins 24 of a forked crank arm 25 carried by a shifting rod 26journaled to the apron C, and by means of which the sleeve 18 may beshifted endwise to engage either one of the gears 19, 20 with thebeveled gear 27 to reverse the direction of rotation of the gear 27.v Inan intermediate position the gears 19, 20 are both out of engagementwith gear 27.

The gear 27 is journaled to the apron and carries with it a pinion 28which in turn drives a gear 29 carried rigidly on a shaft 32 on which isloosely journaled a pinion 30. A knurl 31 serves to clutch the gear 29to the pinion 30, and to releasersaid clutch. A gear 33 on the shaft 34meshes with and is driven by the pinion 30, and the gear 33 in turndrives a pinion 35 which engages the rack 36 on the lathe bed A, to feedthe carriage longitudinally. A pinion 37 is in mesh with the gear 33 andby means of the crank 38 is adapted to feed the carriage longitudinallyby hand when the clutch controlled by knurl 31 is disengaged. The gear29 is also adapted to engage and drive a pinion 39 on the cross feedscrew 40 to feed the tool holder, not shown, crosswise of the lathe bed.The pinion 39 is slidable longitudinally of the cross feed screw toshift said pinion into and out of engagement with the gear 29.

A forked sector arm or lever 41 is journaled upon the shaft 6 andcarries between its arms a gear 42 splined to the shaft 6 and adapted tobe fed longitudinally on said shaft with said sector arm, and a gear 43in mesh with and adapted to travel concentrically about the gear 42 withthe movements of said sector arm. By shifting the sector arm along shaft6 the gear 43 is adapted to mesh with and drive any one of 160 With therespective beveled gears on said the change gears 10 to 14, and therebyto drive t-he sleeves 9 and 18 at several different rates of speed.

The free end of the sector arm extends around the lower edge of theapron so as to occupy a position at the front of the apron and oppositea guiding and locking plate 45 secured to the front of the apron. Aspring actuated pin 48 carried by the free end of the sector arm isadapted to engage any one of a series of perforations 47 in the plate 45to lock the gear 43 in engagement With the respective gears 10 to 14.When the pin 48 is not in engagement With one of said perforations is itin engagement With a recess 46 from Which it can not be detached, whichrecess serves to hold the sector arm in place and to guide the pin 48through the desired channels in adjusting the pin from one of theperforations 47 to another, The pin 48 has an annular enlargement 49have ing a limited movement endwise of the pin 48 in a'recess 50 in thefree end of the sector arm. A spring 51 serves to press the pin 48against the plate 45, and a knurled head 52 pivotally supported upon theprojection 53 of the sector arm and keyed to the pin 48 enables the pin48 to be retracted Within the limits of movement of the enlargement 49to effect different adjustments of the sector arm.

The mechanism herein illustrated and described is capablek ofconsiderable modification Without departing from the principle of myinvent-ion.

Having described my invention, What- I claim is:

1. In a mechanism of the character described, a feed rod, a toolcarriage, a supplemental shaft carried by said tool carriage andreceiving motion from said feed rod, achange gear sleeve looselyjournaled on said feed rod and movable with the tool carriagelongitudinally of said feed rod, a plurality of change gears ofdifferent diameter rigidly mounted upon said sleeve, a sector'armjournaled upon and movable longitudinally of said supplemental shaft,gear mechanism carried by said sector arm adaptedrtotransmit motion fromsaid supplemental shaft to said change gears, a reversing sleeve looselyjournaled upon said feed rod splined to said change gear sleeve andadjustable endvvise relative to'said tool carriage, said reversingsleeve being provided with a plurality of beveled gears, and a beveledgear journaled in Xed relation to the tool carriage and adapted toreceive motion in oppositeV directions through' engagement reversingsleeve, and through a train of gears to feed saidtool carriage.

` 2. In a' mechanism of the character described, a feed rod, 'a toolcarriage, a supplemental shaft journaled in fixed relation to the toolcarriage, means to transmit motion from said feed rod to saidsupplemental shaft,fa plurality of change gears of different diameterjournaled incommon in fixed rrelation to said tool carriage, a train ofgears operatively connected to said change gears and adapted to bedriven thereby and to feed said tool carriage, a sector arm pivotallymounted upon said supplemental shaft and adjustable longitudinallythereof, a plurality of gears carried by said sector arm adapted totransmit motion from said supplemental shaft selectively to saidrespective change gears, and a guide and locking plate carried by saidtool carriage having locking recesses and guide channels, and a membercarried by the free end of said sector arm adapted to continuouslyengage said guide and locking plate and by traveling through said guidechannels from one locking recess to another to carry said sector arm andits gears from engagement With one change gear into engagement withanother change gear.

3. In a mechanism of the character described, a feed rod, a toolcarriage, a supplemental shaft journaled in fixed relation to the toolcarriage, gear mechanism carried by said tool carriage to transmitmotion from said feed rod to said supplemental shaft, a change gearsleeve loosely journaled upon said feed rod in fixed relation to saidtool carriage,aplurality of change gears rigidly mounted upon saidchange gear sleeve, a train of gears operatively connected to saidchange gear sleeve and ladapted tobe driven thereby and to feed saidtool carriage, a sector arm pivotally mounted upon said supplementalshaft and adjustable longitudinally thereof, a plurality of gearscarried by said sector arm adapted to transmit motion from saidsupplemental shaft selectively to said respective change gears, a guideand locking plate carried on the'outer face of said tool carriage andprovided with locking recesses to lock said sector arm in position forits gears to transmit motion to said respective change gears, and guidechannels leading from one to another of said locking recesses, and amember carried by the free end of said sector arm adapted toVcontinuously engage said guide and locking plate and by travelingthrough said guide channels from one locking recess to another to carrysaid sector arm and its gears froml engagement with one change gear intoengagement with another change gear.

l 4. In a mechanism of the character defixed relation to said toolcarriage, a plurality of change gears of different diameter rigidlymounted upon said sleeve, a forked sector arm ournaled upon and movablelongitudinally of said supplemental shaft, a gear splined to saidsupplemental shaft and carried between the arms of said sector arm, agear carried by said sector arm in mesh With and adjustableconcentrically about said gear splined to said supplemental shaft andadjustable to engage and drive any one of said change gears, a reversingsleeve loosely journaled upon said feed rod, having sliding engagementwith said change gear sleeve, and adjustable endwise relative to saidtool carriage, said reversing sleeve being provided with a plurality ofgears, and a train of gears carried by said tool carriage adapted to bedriven in reverse direction by the respective gears on said reversingsleeve to feed said tool carriage.

5. In a mechanism of the character described, a feed rod, a toolcarriage having bearings to support said feed rod, a gear splined to thefeed rod and movable With said carriage, a supplemental shaft journaledto said tool carriage and provided with a gear receiving motion fromsaid gear on the feed rod, a change gear sleeve loosely journaled onsaid feed rod and movable endWise thereon with said tool carriage, aplurality of change gears of different diameter carried by said sleeve,a sector arm pivotally mounted upon said secondary shaft and adjustablelongitudinally thereof, a plurality of gears carried by said sector armadjustable to transmit motion from said secondary shaft selectively toany one of said change gears, a beveled gear carried by the toolcarriage and serving through a train of gears to feed the tool carriage,and a reversing sleeve loosely journaled on said feed rod and providedWith beveled gears adapted to alternately engage opposite sides of saidbeveled gear on the tool carriage, said reversing sleeve beingoperatively connected to said change gear sleeve and adjustable endwiserelative to said tool carriage.

In testimony whereof I have aflixed my signature in presence of twoWitnesses.

GEORGE SPINNER.

IWitnesses:

C. W. MILES, IV. THORNTON BOGERT.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C.

